81![](/pdf-icon.png) | Add to Reading ListSource URL: www.iidh.ed.cr- Date: 2016-06-22 18:30:42
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82![](/pdf-icon.png) | Add to Reading ListSource URL: www.sep.ucr.ac.cr- Date: 2016-04-13 11:03:16
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83![](/pdf-icon.png) | Add to Reading ListSource URL: oaice.ucr.ac.cr- Date: 2018-03-15 12:21:02
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84![](/pdf-icon.png) | Add to Reading ListSource URL: helio_cr.tp4.rub.de- Date: 2013-01-25 07:10:38
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85![](/pdf-icon.png) | Add to Reading ListSource URL: www.sugese.fi.cr- Date: 2016-10-31 17:27:54
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86![](/pdf-icon.png) | Add to Reading ListSource URL: www.ts.ucr.ac.cr- Date: 2010-10-11 10:24:28
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87![](/pdf-icon.png) | Add to Reading ListSource URL: www.cea.ucr.ac.cr- Date: 2017-12-14 12:08:57
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88![](/pdf-icon.png) | Add to Reading ListSource URL: www.mag.go.cr- Date: 2018-03-13 13:31:21
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89![](/pdf-icon.png) | Add to Reading ListSource URL: www.stfrancis.ed.cr- Date: 2016-09-07 11:10:29
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90![](/pdf-icon.png) | Add to Reading ListSource URL: helio_cr.tp4.rub.de- Date: 2013-01-25 07:10:38
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